The range of the human voice extends from 100 Hz to 17 kHz but traditional telephone calls limit audio frequencies to the range of 300 Hz to 3.4 kHz.


VoLTE uses Wideband transmits in the audio frequency range of 50 Hz to 7 kHz.

In addition, some wideband codecs may use a higher audio bit depth of 16 bits to encode samples, also resulting in much better voice quality


WhatsApp call uses all the human audible frequency range 20Hz - 20,000Hz = superb call quality

they are not stingy, in fact the telco's pay the building management to have their equipment installed at the premise cause you're renting space.

Instead, what happens is that people are afraid of "radiation", WiFi and mobile networks are considered non-ionizing radiation, less than 0.5% chance or harm

you are more likely to get into a traffic collision than to be harmed from WiFi and mobile networks

This post has been edited by moonsatelite: Nov 14 2023, 03:06 PM